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package io.appium.android.bootstrap.handler;
import android.os.SystemClock;
import com.android.uiautomator.common.ReflectionUtils;
import com.android.uiautomator.core.UiObjectNotFoundException;
import io.appium.android.bootstrap.Logger;
import java.lang.reflect.Method;
/**
* This handler is used to long click elements in the Android UI.
*
*/
public class TouchLongClick extends TouchEvent {
/*
* UiAutomator has a broken longClick, so we‘ll try to implement it using the
* touchDown / touchUp events.
*/
private boolean correctLongClick(final int x, final int y, final int duration) {
try {
/*
* bridge.getClass() returns ShellUiAutomatorBridge on API 18/19 so use
* the super class.
*/
final ReflectionUtils utils = new ReflectionUtils();
final Method touchDown = utils.getControllerMethod("touchDown", int.class,
int.class);
final Method touchUp = utils.getControllerMethod("touchUp", int.class, int.class);
if ((Boolean) touchDown.invoke(utils.getController(), x, y)) {
SystemClock.sleep(duration);
if ((Boolean) touchUp.invoke(utils.getController(), x, y)) {
return true;
}
}
return false;
} catch (final Exception e) {
Logger.debug("Problem invoking correct long click: " + e);
return false;
}
}
@Override
protected boolean executeTouchEvent() throws UiObjectNotFoundException {
final Object paramDuration = params.get("duration");
int duration = 2000; // two seconds
if (paramDuration != null) {
duration = Integer.parseInt(paramDuration.toString());
}
printEventDebugLine("TouchLongClick", duration);
if (correctLongClick(clickX, clickY, duration)) {
return true;
}
// if correctLongClick failed and we have an element
// then uiautomator‘s longClick is used as a fallback.
if (isElement) {
Logger.debug("Falling back to broken longClick");
return el.longClick();
}
return false;
}
}
TouchLongClick类继承于TouchEvent，而TouchEvent继承于CommandHandler.调用TouchEvent的execute的方法中，调用了executeTouchEvent方法，所以我们来看上面的executeTouchEvent就好了，执行长点击事件，在uiautomator里有UiObject.longClick()方法，但是写过case的人知道，有时候这个方法达不到我们的需求，但是我们是自己了反射调用TouchDown和TouchUp两个个方法，而在appium里帮你解决了，它自己就帮你做到了这一点，如果你传入到是控件对象，那无可厚非，还是调用UiObject.longClick方法，如果你想根据坐标，时间在点击的话，那么就调用currectLongClick这个appium给你封装好的方法。
final ReflectionUtils utils = new ReflectionUtils();
final Method touchDown = utils.getControllerMethod("touchDown", int.class,
int.class);
final Method touchUp = utils.getControllerMethod("touchUp", int.class, int.class);
通过反射得到uiautomator里的没有公开的类，从而我们想要的方法touchDown和touchUp.
public ReflectionUtils() throws IllegalArgumentException,
IllegalAccessException, SecurityException, NoSuchFieldException {
final UiDevice device = UiDevice.getInstance();
final Object bridge = enableField(device.getClass(), "mUiAutomationBridge")
.get(device);
if (API_18) {
controller = enableField(bridge.getClass().getSuperclass(),
"mInteractionController").get(bridge);
} else {
controller = enableField(bridge.getClass(), "mInteractionController")
.get(bridge);
}
}
因为uiautomator api的改动，在api18以上的版本中，mInteractionController是存在于UiAutomationBridge的父类中的变量，而在18以下的版本中它是存在于本类中的。所以反射时会有一点点小小点差异，但总的来说都是要获得InteractionController这个类，因为这个类里面存在有我们要但touch类但方法。最后我们就能轻松调用鼠标的TouchUp和TouchDown他们啦。然后再加上时间，长按就实现啦。
package io.appium.android.bootstrap.handler;
import com.android.uiautomator.common.ReflectionUtils;
import com.android.uiautomator.core.UiObjectNotFoundException;
import io.appium.android.bootstrap.Logger;
import java.lang.reflect.Method;
/**
* This handler is used to perform a touchDown event on an element in the
* Android UI.
*
*/
public class TouchDown extends TouchEvent {
@Override
protected boolean executeTouchEvent() throws UiObjectNotFoundException {
printEventDebugLine("TouchDown");
try {
final ReflectionUtils utils = new ReflectionUtils();
final Method touchDown = utils.getControllerMethod("touchDown", int.class,
int.class);
return (Boolean) touchDown.invoke(utils.getController(), clickX, clickY);
} catch (final Exception e) {
Logger.debug("Problem invoking touchDown: " + e);
return false;
}
}
}
有了上面的分析，对TouchUp和TouchDown还有TouchMove的分析就不用再多说了，都是反射的原理
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原文地址：http://www.cnblogs.com/poptest/p/4950610.html
